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APPARATUS PUR PURIPYING WATER.

No. 589,937. Patented Sept. 14,1897.

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' J. DEMOULIN.

APPARATUS FOR PURIFYING WATER.

No. 589,937. Patented Sept. 14,1897.

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`J. DBMOULIN., APPARATUS FOR PURIFYING WATER.

Patented Sept. 14,1897.

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APPARATUS FOR 'PURIFYING WATER.

SPECIFICATION forming part of Letters Patent No. 589,937, datedSeptember 14, 1897.

Application tiled PebruaryZS, 1897. Serial No. 624,648. (No model.)Patented in Belgium August 19, 1895, 110.117,08); in France February 18,1896,1To. 254,061; in England March 2, 1896, No. 4,723, and in GermanyMarch 2, 1896,No. 90,737.

Belgium August 19, 1895, No. 117,089gwith patents for improvement datedApril 18, 1896,

No. 120,937, and August 10, 1896, No. 122,973;4

in France February 18, 1896, No. 254,061, and certificate of additionAugust 10, 1896, No. 25%,0615 in England March 2, 1896, No. 4,723, andin Germany March 2, 1896, No. 90,737. To prevent the formation of mudand sediment in tanks under pressure it has heretofore been customary topass the water first through filters. This, however, is insu fticientand does not prevent the iinal formation of mud and deposits in thetank, thus necessitating speedy cleaning to get rid of the sediment. Inorder to remedy this, I have devised a new process of continuous andautomatic exhaustion of the mud and sediment forming in the tankscontaining the water under pressure after they have been 'fed withiiltered hot water. The process consists in keeping the water in thetank, with the impurities it contains, in continuous circulation througha filter, which serves also for the preliminary iiltering of the water.This filter is on the traverse of the water-feeding supply and thecirculating water in the tank. It becomes the general receptacle for theimpurities inthe feed-water and that in the tank, and when the filterhas `become obstructed the cleaning of the filter and exhaustion 'of themud can be effected automatically by utilizing the water under pressure`in the tank itself. -Y

The example illustrated `in .the drawings shows the application of myprocess and of the apparatus in connection with a steamboiler for thepurpose of preventing sediments in the boiler and bringing aboutautomatic cleansing of the apparatus. However, as will be easilyunderstood from the explanations above, 1 give this application merelyas One example, and the invention can be applied .to other situationswithout departing from the .spirit of my invention.

The accompanying drawings represent the apparatus whichl use for thepractical realization of my process, and will facilitate thecomprehension of my process.

Figures l and 2 s how the apparatus respectively in raised and groundplan. Fig. 3 shows a section of the apparatus on the line 1 1, Fig. 2.Fig. 4 shows a section on line 2 2, Fig. 1. Figs. 5 and 6 show,respectively, 4in vertical section and in raised plan a slight variationof the above apparatus.

A receiver R above the tank or on a boiler L is divided internally, asshown in Figs. 3

and 4, forming six compartments A B C D F S or receivers, whichcommunicate with each other. Receiver A constitutes a steam-chamber,into which the steam arrives bythe necks N O, Figs. 1, 2, and 3, andcommunicates with receiver B by pipes Q, Figs. 1 and 3, which are fittedinto the partition a, Fig. 3. ceiver B receives the feeding-water of theboiler through pipe M; The water reaching chamber B is brought toebullition by the steam issuing from the pipes Q, Fig. 3, and entersinto receiver C by the opening c, Fig. +L, in the lower part of chamberB, the bottom of which is screw-shaped or tapering in order tofacilitate the elimination of salts and impurities which might form inthe boiling which the waterundergoes in this receiver.

. The boiling water iiows out from receiver B on the level of a filterF, which consists of a receiver containing gravel. This filter isprovided in its upper and lower parts with a wire-gauze m, which isstrengthened by perforated sheet iron.

- 1ul order to reach the boiler L through pipe H, Fig. 3, the waterflows through the iilter F, which holds back the mud and otherimpurities that it contained. On the other hand the mud which might yetform in .the boiler is constantly sucked into pipe 1, Fig. 1, by V meansof pump-sucker J and one 0r more collectors K at the bottom of theboiler and at such places where mud might accumulate. These collectorsareprovided with a large number of openings O, which create incessantcurrents in the water of the boiler and thus IOO prevent the lormationof any deposit. The mud and water thus sucked up are conducted by pipe Iand neck P to the bottom of receiver S, which communicates with receiverC at the level of the lilter by an opening c'. The impurities collectthere, while the water returns to the boiler by pipe l-I after havingbeen drained of its sediments.

The impurities arising from the boiling of the feed-water and thecontinually-ciroulating boiler-water form a sediment after some time,which obstruets the lilter F and stops the water-flow to the boiler. Onaccount of the obstruction of the lter the water-mark rises in themud-drum D, which communicates with it through the opening c, Fig. 4.This mud-cock D is provided with a float E, bearing 4on a valve G7 whichcloses the outletport r. When the water-mark in D reaches the float E,it rises and the valve G uncovers the opening 7'. At that moment avacuum occurs in the apparatus, with the result that the water in theboiler rises through pipe II and flows through the lilter. This rush ofwater pushes the gravel in the filter against the wire-gauze m, cleansthe filter completely, and still contributes to the exhaustion of themud deposits on the wire-gauze m, which escape with the water throughopening r. Then the water-mark sinks again in the mud-cock D, the floatresumes its normal position, the

valve G closes the exhaustion-port r, and the feeding of the boiler aswell as the simultaneous filtration of the water in the boiler are lresumed automatically.

In Figs. 5 and 6 the position of the filter is modified in the followingmanner: The iilter F is here arranged above receiver C and lies in aninverted position from that which it occupies in the apparatus shown inFigs. l and 4. In this arrangement the feed-water leaving receiver B andthe water brought up by suction meet at the bottom of the cone ofreceiver C, which is closed at its base. These waters rise into thefilter, iiow through it, and return to the boiler or tank, whichever itmay be, through pipe I'I. The deposits are exhausted through the valveG, in combination with float E, the necessary depression is broughtabout in the saine manner as before, and the water of the boiler or tankeffects the cleansing of the iilter.

Accordingly my new process allows not only the feeding of a boiler ortank by means of iiltc red hot water, but it supplements this action bycreating-a continuous circulation ot the water in the tank. In additionthe water is freed of all impurities and lime salts which might form inthe tank itself. Finally the mud and sediment are exhaustedautomatically, owing to the employment of a draft of water underpressure derived from the tank, so that the apparatus used for theexecution of my process and the tank proper are constantly maintained ina perfect state of cleanliness.

As the apparatus which I use is comparatively light and not cumbersome,it can easily be adapted on any system of tank.

In some eases an economical reduction could be made by omitting the partof the invention relating to the automatic cleansing of the filter. Inthat case only the application of the principle of continuous filtrationwould be considered, while the cleansing would take place, as before,through the action of the waters rising into the apparatus when amudcoek is opened, such mud-cock taking the place of the automatic one.

I claiml. In combination in an apparatus for purifying water, asteam-chamber having steaminlets thereto, a water-chamber beneath thesame with openings between, a feed-water inlet to the lower chamber, areceiving-chamber in communication with the water-chamber, anoutlet-pipe and a filter interposed between the receiving-chamber andthe outlet, substantially as described.

2. In combination with a steam-boiler a receiving-chamber and a filterhaving a pipe connection extending below the water-level in thc boiler,a feed-Water inlet and the sediment-chamber in communication with thereceiving-ehamber,a lioat within said sedimentchamber and a valveconnected with and operated by said float to permit the water in theboiler to rise through said filter, substantially as described.

3. In combination with a boiler a receivingchamber C, a feed-waterinlet, a steam-chamber above the water-chamber having steaminlets, areceiver S a pipe I leading from the bottom of the boiler to saidreceiver S, an opening between said receiver S and the receiving-chamberC, a ilter between the receiving-chamber C and the boiler, and adischarge for the sediment, substantially as described.

ll. In combination with a central receivingchamber C, a water-chamberpartially encircling the same having an inclined bottom, a steam-chamberabove the water-chamber separated by a partition but having openingsbetween the two chambers, a feed-water pipe to the chamber B, asediment-chamber D having a float and valve and a mud-drum S having apipe connection P to the boiler, substantially as described.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

JEAN DEMOULIN. Witnesses:

CHAs. DULLY, JOHN Gnoss.

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